Query DSL: Revert back and have range, terms, and prefix filter _cache set to true, closes elastic#456.

Author: kimchy

modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/PrefixFilterParser.java

@@ -53,7 +53,7 @@ public class PrefixFilterParser extends AbstractIndexComponent implements XConte
     @Override public Filter parse(QueryParseContext parseContext) throws IOException, QueryParsingException {
         XContentParser parser = parseContext.parser();
 
-        boolean cache = false;
+        boolean cache = true;
         String fieldName = null;
         String value = null;
 

modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/RangeFilterParser.java

@@ -52,7 +52,7 @@ public class RangeFilterParser extends AbstractIndexComponent implements XConten
     @Override public Filter parse(QueryParseContext parseContext) throws IOException, QueryParsingException {
         XContentParser parser = parseContext.parser();
 
-        boolean cache = false;
+        boolean cache = true;
         String fieldName = null;
         String from = null;
         String to = null;

modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/TermsFilterParser.java

@@ -56,7 +56,7 @@ public class TermsFilterParser extends AbstractIndexComponent implements XConten
         XContentParser parser = parseContext.parser();
 
         MapperService.SmartNameFieldMappers smartNameFieldMappers = null;
-        boolean cache = false;
+        boolean cache = true;
         TermsFilter termsFilter = new PublicTermsFilter();
         String filterName = null;
         String currentFieldName = null;